EP0601313B1 - Device for microsurgery on the eye of a living creature - Google Patents

Abstract

The plug-in element is held in the housing by a locking mechanism (60) so that the first tube (11) is connected with a squeeze element in the housing (20). The second tube peristaltically engages with a pump wheel rotationally driven on an axle (83) and also positioned in the housing near a curved track. A first support part (35) pointing in the plug-in direction on a handle (31) has a first duct (36) for the first tube. A second support part (45) in the form of a baseplate at right-angles to the plug-in direction is spaced apart from the first support part and is crosswise to the plug-in direction. The side facing away from the first tube has a second duct for a second tube.

Description

The invention relates to a device for recording one with an irrigation line and an aspiration line provided insertion element for performing microsurgical Interventions on the eye of a living being, with two in one Housing against the restoring force of a tension member pivoted locking levers and one on one Axis mounted and rotatable by a drive unit driven and multi-roller pump wheel, the individual elements in this way in the interior of the housing are arranged that when inserted and by the locking levers inserted element the irrigation line with an interrupter and a filter standing aspiration line with the rollers of the pump wheel are interactively connected peristaltically.

From US-A 4,904,168 is one for receiving a cassette-shaped and with an irrigation and an aspiration line provided device known trained device, which is a housing which can be closed by a cover and in the interior of the same two spaced apart and each by an axle against the restoring force a spring swiveling locking lever and a driven by an electric motor rotating about an axis Pump wheel comprises, wherein the pump wheel arranged with it distributed Roles in the functional position with the assigned Aspiration management cooperating peristaltically is feasible.

Another device for receiving a cassette-shaped as well as with an irrigation and an aspiration line provided insertion element is known from EP-A 0 362 822, the device being a with a pivoted Front panel provided housing, an arranged therein and driven by an electric motor rotating about an axis The pump wheel and the cassette-shaped that can be brought into engagement with it trained insert element, wherein in the Functional position of the pump wheel with rollers arranged on it with the aspiration line arranged on the insertion element peristaltic cooperatively engages and the insertion element through appropriately trained locking elements is held on the housing.

Other facilities with at least one pump wheel as well a slide-in element that can be brought into engagement with it of a cassette-shaped hose carrier are from the publications (WO 86/06964; EP-A 0 293 081; US-A 4,963,131) are known.

The invention has for its object a device according to the preamble of claim 1 improve and train so that when inserting the insertion element an exact and reliable interaction the functional elements arranged thereon with the individual, Functional elements arranged in the interior of the housing are reached becomes.

The invention solves the problem in that the as a chamber trained interior for the insertable into the housing Insert element by several oriented in the direction of insertion and transversely spaced from each other Partitions are divided into individual functional levels, whereby the first functional level on the first partition arranged drive unit, a ventilation valve and that Interrupter organ and the second functional level to the two one side of the second partition is pivotally mounted Locking lever and the third functional level in the Distance to the third partition on the other side of the includes second impeller mounted impeller, which over one oriented transversely to the partition walls and with the one end mounted in the third partition as well as with the other end is operatively connected to the drive unit drive shaft connected is.

Further features of the invention result from the following Description in connection with the drawing and the claims.

Fig.1 eine in perspektivischer Ansicht dargestellte ophthalmologische Einrichtung mit einem herausgezogen dargestellten und als Schlauchträger ausgebildeten Einschubelement;

Fig.2 ein in grösserem Massstab und im Schnitt dargestelltes Teilstück eines Trägerelements für das Einschubelement mit in einer ersten Funktionsebene angeordneten Funktionselementen;

Fig.3 das in grösserem Massstab und im Schnitt dargestellte Teilstück des Trägerelements mit einer in einer zweiten Funktionsebene angeordneten Einzugsmechanik für das teilweise herausgezogen dargestellte Einschubelement;

Fig.4 das Teilstück des Trägerelements gemäss Fig.3 mit der zweiten Funktionsebene mit dem von der Einzugsmechanik in das Trägerelement eingezogenen Einschubelement;

Fig.5 das in grösserem Massstab und im Schnitt dargestellte Teilstück des Trägerelements mit einer in einer dritten Funktionsebene angeordneten sowie mit dem Einschubelement im Eingriff stehenden Pumpeneinheit; und

Fig.6 das im Schnitt und in Draufsicht dargestellte Trägerelement mit den drei in parallelem Abstand zueinander angeordneten Funktionsebenen und den jeweils in den einzelnen Ebenen angeordneten Funktionselementen.

The invention is described below with reference to the drawing. It shows:

1 shows an ophthalmic device shown in a perspective view with an insertion element shown drawn out and designed as a tube carrier;

2 shows a section of a carrier element for the insertion element, shown on a larger scale and in section, with functional elements arranged in a first functional level;

3 shows the section of the carrier element, shown on a larger scale and in section, with a pull-in mechanism arranged in a second functional level for the insert element shown partially pulled out;

4 shows the section of the carrier element according to FIG. 3 with the second functional level with the insertion element drawn into the carrier element by the pull-in mechanism;

5 shows the section of the carrier element shown on a larger scale and in section with a pump unit arranged in a third functional level and in engagement with the insertion element; and

6 shows the carrier element shown in section and in plan view with the three functional levels arranged parallel to one another and the functional elements respectively arranged in the individual levels.

1 shows a perspective view and in total designated 100 ophthalmic facility for use in microsurgery on Eye of a living being. The device 100 comprises several arranged in a housing 1 and for the respective operational Interventionally designed functional units 3, 4, 10, 12 and 14. The individual functional units 3, 4, 10, 12 and 14 are preferably interchangeable as not shown Inserts designed and from the front into the housing 1 insertable. The first two functional units 3 and 4 are provided with means, not shown, by means of which Illuminated inside the eye during surgery can be. For this, a not shown, on which one end with a light source and the other end with a fiber optic cable provided to the connector trained sockets 3 '' and / or 4 '' of the functional units 3 and / or 4 connected. The one for the operative The required light intensity can be adjusted using a rotary knob 3 'and / or 4' can be continuously adjusted and regulated. Furthermore, one can be seen in FIG. 1 on the end face of the housing 1 multi-pin connector 7, which for connecting additional, not shown Surgical instruments or the like is provided.

On the front of the housing 1 is above the individual Functional units arranged an image field 2, which, for example into individual display and control fields 2 'with LCD display (Liquid Crystal Display) is divided. The individual Display and control panel 2 'serves as a function of the program controlled exchange of information for the user of the entire ophthalmic facility 100. The individual Display and control panels 2 'are marked by slight Finger pressure operated for the respective program selection, whereby the selected display or displays related to the non-actuated displays are then illuminated.

In the description below, the first functional unit 10 as irrigation unit 10, the second functional unit 12 referred to as aspiration unit 12. The third Functional unit 14 is referred to as a printing unit 14. The both units 10 and 12 are connected to one another via supply and disposal lines (not shown) together form an aspiration and not shown Irrigation system.

The printing unit 14 has at least one connecting piece 6 for connection a line and an adjusting knob 5 for regulating intraocular pressure (IOP) during surgery. The printing unit 14 can be a not shown Viscous injection device can be assigned, which one Stub 6 'for connecting a line, not shown and has an adjusting knob 5 'for regulating.

The individual functional elements, not shown in FIG. 1 the irrigation unit 10 and the aspiration unit 12 are above a schematically shown in Fig.1 and insertable into the housing 1 of the device 100 Insert element 30 in operative connection with one another.

At this point it should be noted that for inclusion of the individual functional elements and for receiving the insert element 30 in the housing 1 a correspondingly trained and provided with an opening 22 ' Chamber 24 can be arranged. Preferably however, a carrier element 20 that can be inserted into the housing 1 provided which has the chamber 24 into which the Insert element 30 inserted and pulled out again can.

As shown schematically in Fig.1, this can be used as a hose carrier trained insertion element 30 according to arrow direction Y from a arranged in the housing 1, not shown here Carrier element 20 pulled out and in the direction of the arrow Y 'pushed back into the chamber 24 of the carrier element 20 become. At this point it should be noted that this is in the figures 1, 3, 4 and 5 insert element 30 shown with the arranged functional elements 11, 13, 31, 40, 45 and 56, 56 'not The subject of this invention is and therefore not in more detail is described.

In the carrier element 20 there are several, not shown in FIG. Functional elements arranged with which the insert element 30 in the inserted state in operative connection stands. The in different functional levels in the support element 20 arranged functional elements and one accordingly trained retraction and locking mechanism for the insert element 30 are described below.

In Fig.2 is a on a larger scale and in section shown section of the support member 20. The essentially box-shaped support element 20 has an upper and a lower base plate 21 and 21 ', two side walls 23 and 23 '(Fig.6), an end plate 22 and a rear wall, not shown, the parts 21,21 ' and 23, 23 'and 22 essentially those for accommodating the individual Form functional elements trained chamber 24. In an opening 22 '(FIG. 6) is provided in the end plate 22, through which the cassette-shaped, for example Insert element 30 can be inserted into chamber 24. Between the two base plates 21 and 21 ', as in Fig.2 shown, a first partition 25 arranged, which fixed in the carrier element 20 by means not shown is. On the first partition 25 is one with a Gear 15 '', a drive shaft 16 (Fig.6) and with a Drive motor 15 'provided drive unit 15 for a Pump unit (Fig.5) arranged. Furthermore, the first Partition 25, a solenoid valve 17, a ventilation valve 29 and one connected to it via a line 27 Pressure measuring device 26 arranged. On line 27 is also one with a connection housing 57 (Fig.3) in connection Line 28 connected.

The means not shown on the first partition 25 attached, schematically represented functional elements 15, 17, 26 and 29 form together with the first partition 25 essentially a first functional level A. The Pressure gauge 26 is with a bracket 26 'on the first Partition wall 25 and on a spaced apart second partition 25 '(Fig.6) attached.

Fig. 3 shows this on a larger scale and in section support element 20 shown and the one in the direction of the arrow Y Insert element shown partially pulled out of the chamber 24 30. You can also see the second partition 25 ', which is also shown in FIG the support member 20 is attached. On the second partition 25 ', a pull-in and locking mechanism 60 is arranged, which in the position shown in Figure 3 essentially disengaged from the insertion element 30 Locking cam 40 stands. On the second partition 25 ', the connection housing 57 is arranged and with attached means not shown. The connection housing 57 is on one side via lines 28 and 27 with the Pressure gauge 26 and on the other side for receiving a Coupling piece 56 'formed. The coupling piece 56 'is a section of the on the insertion element 30 arranged filter 56. The pressure gauge 26 is on the bracket 26 ' arranged first and on the second partition 25, 25 ' and attached.

The one also arranged on the second partition 25 ' Retraction and locking mechanism 60 essentially comprises as shown in Figure 3, two corresponding to each other arranged and each with one end over a Pins 62 and 62 'mounted on the second partition 25' Locking lever 61 and 61 '. The two locking levers 61 and 61 'are thus operatively connected against the restoring force standing tension members 69 and 69 'around the axes of the two Pins 62 and 62 'pivotable on the second partition 25' stored. At the other end is the single locking lever 61 and 61 'each through a recess 65 and 65' and two spaced apart webs 63 and 64 or 63 'and 64' for gripping the insert element 30 arranged locking cam 40 formed fork-shaped. The two tension members 69, 69 'are each with one end on an arranged and fastened on the second intermediate wall 25 ' Pins 67 and 67 'held and standing with the other End over each of the two locking levers 61, 61 'arranged and fastened pins 68 and 68' in operative connection. The two tension members 69 and 69 'are for example formed as coil springs and with at both ends integrally formed, the pin 67, 67 'and 68.68' encompassing arc parts (not labeled).

When inserting the insertion element 30 into the carrier element 20 in the direction of the arrow Y ', as shown in FIG. the locking cam 40 formed on the insertion element 30 against the a fork parts 64, 64 'of the two locking levers 61, 61' pressed. Here, the locking lever 61,61 'around the two pins 62, 62 'and at the same time the two Coil springs 69, 69 'pivoted about the pins 67, 67'. During this process, the two coil springs 69, 69 ' curious; excited. When reaching and exceeding a not shown Dead center position of the two locking levers 61, 61 'is tensioned by the restoring force in this position Coil springs 69, 69 'insert element 30 snapped into the chamber 24 of the support member 20. During this movement sequence, the insert element 30 is also included the second hose line 13 arranged thereon (FIG. 5) a pump unit designated as a whole by 70 and the coupling piece 56 ', as shown in Figure 4, with the connection housing 57 engaged.

When pulling out the insert element 30 in the direction of arrow Y (Fig.3) presses the locking cam 40 against the other fork parts 63.63 'of the two locking levers 61.61' so that this can be pivoted with the two coil springs 69, 69 '. The Pivotal movement of the two locking levers 61,61 ' by two correspondingly assigned and on the second partition 25 'fixed pins 66 and 66' limited. In the End position (Fig.3) of the two locking levers 61,61 ' the locking cam 40 of the insert member 30 out of engagement of the two locking levers 61 and 61 ', so that the insertion element 30 according to arrow direction Y from the chamber 24 of the carrier element 20 or from a not shown Chamber of the housing 1 can be pulled out.

When inserting the insertion element 30 into the carrier element 20 in the direction of the arrow Y ', as shown in FIG. the insertion element 30 with the locking cam 40 preferably in one in the second partition 25 'in the direction of insertion oriented slot 125 on the one hand on the retraction and locking mechanism 60 and on the other out with respect to the pump unit 70. The insert element 30 with the second hose line 13 provided second support member 45, as shown in Figure 5, with that arranged on a third intermediate wall 25 ″ Pump unit 70 brought into exact engagement. At the third partition 25 '' can be used to guide the insertion element 30 still spaced rollers 71, 71 'and stops 72 are provided, through which a Tilting of the insertion element 30 in the carrier element 20 prevented becomes. At the third partition 25 '' is still with not shown means provided with a sensing element 54 ' Switch 54 attached. From that with a touch organ 54 'provided switch 54 is for operational readiness in the end position, a signal is passed on to the pump unit 70. The pump unit 70 is actuated by the signal.

The via a drive shaft 83 (Fig.6) and a clutch 19th with the drive shaft 16 of the drive unit 15 (Fig.2) in Pump unit 70 which is operatively connected comprises, as in FIG 5 shows a pump wheel driven in the direction of arrow R. 80. On the pump wheel 80 are spaced in the circumferential direction mutually arranged rollers 75 mounted. In the illustrated Embodiment are five on the impeller 80 Circumferentially distributed rollers 75 are provided. Hereby is achieved that in each position of the pump wheel 80 at least two rollers 75 arranged on the second support part 45 second hose line 13 (Fig.5) are engaged. The rollers 75 are each about an axis 76 against the Direction of rotation of the pump wheel 80 driven in the direction of arrow R '. The counter to the arrow direction R of the pump wheel 80 Rollers 75 driven in the direction of the arrow R 'cause one optimal functioning of the peristaltic pump wheel 80, without depending on the hose 13, which abuts on the circular curved path 50 of the support member 45, one of which Hose line 13 extending tensile effect is transmitted. The pump unit 70 arranged on the third intermediate wall 25 ″ will be described later in detail in connection with Fig.6.

6 shows the box-shaped support element 20 with the three arranged parallel to each other Functional levels A, B and C shown in section and in plan view and one recognizes the two side walls 23, 23 ', those with the opening 22 'provided end plate 22 and the one in chamber 24 arranged and fastened with means not shown Partitions 25.25 'and 25' '.

On the first partition 25 are not shown with Averaging that with the drive motor 15 'and the gear 15' ' provided drive unit 15, the ventilation valve 29, the Pressure gauge 26 and the solenoid valve 17 attached. The Solenoid valve 17 is shown with the schematically Squeeze element 17 'provided, by means of which the elastic hose 11 in the inserted state of the insertion element 30 (Fig. 4) depending on the activation of the solenoid valve 17 and can be opened again. The hose line 11 is clamped against by means of the squeezing element 17 ' a not shown and designed as an abutment Mandrel of the squeezing element 17 'pressed. So that Crimping element 17 'engages with the hose line 11 can be brought are in the insertion element 30 arranged accordingly Recesses provided. The pressure gauge 26 is with the bracket 26 'on the first partition 25 and the second partition 25 'attached.

On the second partition 25 'is on that of the first partition 25 facing side shown in Fig.3 and 4 and pull-in and locking mechanism already described above 60 arranged.

On the side facing the second partition 25 ', as shown in Figure 6, on the third partition 25 '' arranged in its entirety with 70 designated pump unit and you can see the pump wheel 80, which is via a drive shaft 83 and via the coupling 19 with the drive shaft 16 of the drive unit 15 is in operative connection. At the third partition 25 '' is by means not shown a ring gear 78 provided with an internal toothing 79 is fastened. Stand with the internal toothing 79 of the ring gear 78 several distributed around the inner circumference and with one External teeth 77 'provided pinion 77 in engagement, wherein each individual pinion 77 via an axis 76 with the pump wheel 80 is in operative connection.

The impeller 80 has two through a disc-shaped intermediate piece 82 disks arranged parallel to each other 81 and 81 '. Are between the two disks 81 and 81 ' the rollers 75 arranged and operatively connected to the axis 76. The individual parts 75 to 80 of the pump unit 70 are in active connection with one another in such a way that in a rotational movement of the pump wheel 80 oriented about the Z axis in the direction of the arrow R on the pump wheel 80 via the respective Axis 76 with the pinion 77 and ring gear 78 in connection standing rollers 75 around the axis Z 'in opposite directions Turn the direction of rotation in the direction of the arrow R '.

Claims (11)

1. Device for accommodating a plug-in element (30) provided with an irrigation conduit (11) and an aspiration conduit (13) which is used for carrying out microsurgery on the eye of a living creature, said device being provided with two latching levers (61, 61') that are respectively pivotally mounted against the restoring force of a tensioning member in a housing and also with a shaft mounted pump impeller (80) which is rotatably driven by a drive unit and is also provided with a plurality of rollers, wherein the individual elements are disposed in the interior of the housing in such manner that when the plug-in element is inserted and retained by the latching levers, the irrigation conduit is connected to an interrupter member (17) and the aspiration conduit communicating with a filter is connected to the rollers of the pump impeller for co-operating therewith in peristaltic manner, characterised in that the interior space in the form of a chamber (24)for the plug-in element (30) that is insertable into the housing (1) is subdivided into separate functional planes (A, B, C) by means of a plurality of parallel partition walls (25, 25', 25'') that are oriented in the direction of insertion while being mutually spaced in a direction perpendicular thereto, wherein the first functional plane (A) embraces the drive unit (15) which is disposed on the first partition wall (25), a ventilating valve (29) and also the interrupter member (17), and the second functional plane (B) embraces the two latching levers (61, 61') which are pivotally mounted on the one side of the second partition wall (25'), and the third functional plane (C) embraces the pump impeller (80) which is mounted on the other side of the second partition wall (25') and spaced from the third partition wall (25''), said pump impeller (80) being connected via a drive shaft (83) which is oriented perpendicularly to the partition walls (25, 25', 25'') and which is mounted at the one end in the third partition wall (25'') and is also actively linked to the drive unit (15) at the other end.
2. Device in accordance with Claim 1, characterised in that the two latching levers (61, 61'), which are pivotally mounted about a respective swivel pin (62, 62') on the second partition wall (25') at their one ends, are provided with a fork-like recess (65, 65') at their other ends for engaging a latching cam (40) which is arranged on the plug-in element (30) transversely of the direction of insertion.
3. Device in accordance with Claim 2, characterised in that, in the vicinity of the recess (65'), the one latching lever (61') is offset relative to the other latching lever (61) such that the two latching levers (61, 61') mutually overlap when in their end position in which they embrace the latching cam (40).
4. Device in accordance with Claims 1 to 3, characterised in that the second partition wall (25') comprises an elongated slit (125) which is constructed in correspondence with the latching cam (40) and is oriented in the direction of insertion for guiding the plug-in element (30).
5. Device in accordance with Claim 1, characterised in that, on the side of the third partition wall (25'') facing the pump impeller (80), there is disposed an internally toothed (79) gear ring (78) and also a plurality of circumferentially distributed pinions (77) which engage with the internal teeth (79) and also engage via a respective axle shaft (76) with the individual rollers (75) that are circumferentially distributed on the pump impeller (80).
6. Device in accordance with Claims 1 and 5, characterised in that the pump impeller (80) comprises two mutually parallel discs (81, 81') which are spaced apart by a cylindrical spacer (82) and between which are disposed the circumferentially distributed rollers (75) that are rotatably mounted with the axle shaft (76) about the axis (Z') thereof.
7. Device in accordance with Claims 1 and 5, characterised in that the pump impeller (80) is rotatably driven about a first axis (Z) in a first direction of rotation and the individual rollers (75) actively linked via the axle shaft (76) to the pinion (77) are each rotatably driven about a second axis (Z') in the opposite direction.
8. Device in accordance with Claim 6, characterised in that the respectively driven rollers (75) are disposed and mounted between the two discs (81, 81') in such manner that a theoretical outer rolling circle formed by the individual, mutually circumferentially distributed rollers (75) is formed which is greater than the outer diameter of the two discs (81, 81') of the pump impeller (80).
9. Device in accordance with Claim 1, characterised in that a mount (26') for a pressure measuring apparatus (26) is disposed at the ends of the two partition walls (25, 25'), said apparatus being connected via a conduit (27) to the ventilating valve (29) disposed on the first partition wall (25).
10. Device in accordance with Claims 1 and 9, characterised in that a terminal housing (57) is disposed on the first partition wall (25) and is actively linked via a conduit (28) to the pressure measuring apparatus (26) and also to the filter (56) disposed on the plug-in element (30) when this has been inserted.
11. Device in accordance with Claims 1 to 10, characterised in that the individual functional planes (A, B, C) together with the individual functional elements arranged on and attached to the partition walls (25, 25', 25'') are disposed in a box-like support element (20) which is constructed such as to be insertable in replaceable manner into the chamber (24) of the housing (1).

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